Hammer drill



FIG. 1 is a top, front, and right side perspective view showing my new design of a hammer drill;

FIG. 2 is a left side perspective view thereof;

FIG. 3 is a right side perspective view thereof;

FIG. 4 is a top perspective view thereof;

FIG. 5 is a bottom perspective view thereof;

FIG. 6 is a front perspective view thereof; and,

FIG. 7 is a rear perspective view thereof.

The broken line showing of environmental structure is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a hammer drill, as shown and described. 